
Ver: 1.2
Jul 28, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
3
G574
Global Mixed-mode Technology Inc.
Terminal Functions
TERMINAL
NAME
NO.
I/O
DESCRIPTION
3.3V
15,16,17
I
3.3V VCC input for card power
5V
1,2,30
I
5V VCC input for card power and/or chip power
12V
7,24
I
12V VPP input for card power
AVCC
9,10,11
O
Switched output that delivers 0V, 3.3V, 5V or high impedance to card
AVPP
8
O
Switched output that delivers 0V, 3.3V, 5V, 12V or high impedance to card
BVCC
20,21,22
O
Switched output that delivers 0V, 3.3V, 5V or high impedance
BVPP
23
O
Switch output that delivers 0V, 3.3V, 5V, 12V or high impedance
GND
12
Ground
MODE
29
I
G570 operation when floating or pulled low; must be pulled high externally for G574 operation.
MODE is internally pulled low with a 150k
Ω pulldown resistor.
OC
18
O
Logic-level overcurrent. reports output that goes low when an overcurrent condition exists
RESET
6
I
Logic-level reset input active high. Do not connect if RESET pin is used. RESET is internally
pulled low with a 150k
Ω pulldown resistor.
RESET
14
I
Logic-level reset input active low. Do not connect if RESET pin is used. The pin is internally
pulled high with a 150k
Ω pullup resistor to 5V, if 5V V
CC exists. And pulled to 3.3V, if 3.3V VCC
exists only.
STBY
19
Logic-level active low input sets the G574 to standby mode and sets all current limits to 50mA.
The pin is internally pulled high with a 150k
Ω pullup resistor to 5V, if 5V V
CC exists. And pulled
to 3.3V, if 3.3V VCC exists only.
CLOCK
4
I
Logic level clock for serial data word
DATA
3
I
Logic level serial data word
LATCH
5
I
Logic level latch for serial data word
NC
13,25,26,
27,28
No internal connection